Lcd Interfacing With Pic 5s3k4q

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Jameco Part Number 133129

Data Sheet BPK216 • v1.2 • 01/99

2x16 Serial LCD Module with Supertwist Display Inexpensive, high-quality displays equipped with the LCD Serial Backpack® interface (2400 or 9600 bps) for convenient 1-wire connection to computers and controllers.

3.2 x 1.4 in. (80 x 36 mm)

Simplified Interface Why hassle with parallel-bus LCDs? These 2x16 serial LCDs use our Backpack interface to accept simple 2400 or 9600-baud serial (RS-232 or inverted TTL level, no parity, 8 data bits, 1 stop bit). Connect +5V power, ground and serial data, and you’re ready to go. Send text to the Backpack and it appears on the screen—it’s that simple. The Backpack provides easy access to all LCD features; just preface any instruction with ASCII 254 (0FE hex). For example, the clear-screen code is 1. To clear the screen, send two bytes: <254><1>. The manual includes a listing of LCD instructions, examples, and tips. For LCDs that work more like a terminal with tabs, returns, linefeeds, etc. see our ILM, 4x20, 4x40, and graphics models.

Smart, Proven Design The LCD Serial Backpack is based on a custom microcontroller running tight code at just 480kHz. In typical applications, it draws less than 3mA including the LCD. Minimal parts count and sensible design make it rugged and reliable. Those same virtues have made the controller IC popular with OEMs; place our chip on your circuit board and the LCD interface is done.

Ordering Information 2x16 serial LCD module, non-backlit (BPK-216N) ...................................................................................45.00 2x16 serial LCD module, LED-backlit (BPK-216L)...................................................................................55.00 Mounting kit w/faceplate, hardware (BEZ-216) ..........................................................................................6.00 Quick-Start for PC s (5V power supply, 9-pin serial adapter, disk; BPX-QUIK) ................................29.00 Backpack w/instructions and installation kit, no LCD (BPK-000) .............................................................29.00 Backpack controller IC (PIC16C54), specify DIP or SOIC (BPK-DIP or BPK-SOI)....................................9.00 Quantity purchases........................................................................................................call or e-mail for quote

Scott Edwards Electronics, Inc.

1939 S. Frontage Road, Suite F, Sierra Vista, AZ 85635 USA ph: 520-459-4802 • fax: 520-459-0623 • www.seetron.com

Data Sheet BPK216 • v1.2 • 01/99

Figure 1. Dimensional data We currently use 2x16 LCD modules from Powertip (PT). Some of our older modules were made by DataVision (DV). All critical dimensions are the same, but the newer PT units have larger characters.

H

A A B C D E F G H I J K L -

y offset pcb edge to hole ctr y pcb height y hole spacing y screen opening y character size x character size x offset pcb edge to hole ctr x screen frame x screen opening x hole spacing x pcb width y frame height mounting hole diameter frame depth, non-backlit frame depth, LED-backlit

DV

PT

2.50 36.00 31.00 16.10 4.89 2.78 2.50 71.20 62.50 75.00 80.00 26.20 2.50 4.70 9.40

2.50 36.00 31.00 16.20 5.94 2.95 2.50 71.00 66.00 75.00 80.00 25.00 2.50 5.00 8.50

• All dimensions in mm. • Worst-case tolerance for any dimension is ±0.50mm. • Maximum depth (from front of screen frame to tips of interface header posts) is 26mm. • Dimensions based on information provided by manufacturers—subject to change without notice.

Table 1. Basic specifications

Table 2. Commonly used LCD instructions by code

Preview complete instruction manual via Internet— www.seetron.com

B

C

D

E

L F

I J K

G

62

Optional Faceplate (BEZ-216; sold

38

13

separately) 82 (thickness = 7mm)

Power requirements..............................4.8 to 5.5 Vdc @ 3mA (incl. LCD) connector .....................5-pin header; 0.025" posts on 0.10" centers Connector pinout....................................................+5 GND SER GND +5 Serial input...............RS-232, or inverted TTL/CMOS, 9600 or 2400, N81 Operating temperature......................................0° to 50°C (32° to 122°F) Initialization ..................................Switches LCD power, performs soft init Instruction prefix .......................................................ASCII 254 (0FE hex) LINES configuration ..................switch down for 1-line, up for 2 or 4 lines BPS configuration ................................switch down for 2400, up for 9600 Clear screen ....................................................................................1 Home (undo scrolling of DD RAM) ..................................................2 Blank display (retaining data)..........................................................8 Hide cursor ....................................................................................12 Show underline cursor ..................................................................14 Move cursor one character left......................................................16 Move cursor one character right ...................................................20 Scroll display one character left ....................................................24 Scroll display one character right ..................................................28 Set DD RAM address (position cursor)..............................128+addr Move to first character of first line ...............................................128 Move to nth character of first line ............................................128+n Move to first character of second line .........................................192 Move to nth character of second line ......................................192+n Set CG RAM address (for custom characters) ....................64+addr

Scott Edwards Electronics, Inc.

1939 S. Frontage Road, Suite F, Sierra Vista, AZ 85635 USA ph: 520-459-4802 • fax: 520-459-0623 • www.seetron.com